// Copyright 2006 Nokia Corporation.
//
// THIS SOURCE CODE IS PROVIDED 'AS IS', WITH NO WARRANTIES WHATSOEVER,
// EXPRESS OR IMPLIED, INCLUDING ANY WARRANTY OF MERCHANTABILITY, FITNESS
// FOR ANY PARTICULAR PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE
// OR TRADE PRACTICE, RELATING TO THE SOURCE CODE OR ANY WARRANTY OTHERWISE
// ARISING OUT OF ANY PROPOSAL, SPECIFICATION, OR SAMPLE AND WITH NO
// OBLIGATION OF NOKIA TO PROVIDE THE LICENSEE WITH ANY MAINTENANCE OR
// SUPPORT. FURTHERMORE, NOKIA MAKES NO WARRANTY THAT EXERCISE OF THE
// RIGHTS GRANTED HEREUNDER DOES NOT INFRINGE OR MAY NOT CAUSE INFRINGEMENT
// OF ANY PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OWNED OR CONTROLLED
// BY THIRD PARTIES
//
// Furthermore, information provided in this source code is preliminary,
// and may be changed substantially prior to final release. Nokia Corporation
// retains the right to make changes to this source code at
// any time, without notice. This source code is provided for informational
// purposes only.
//
// Nokia and Nokia Connecting People are registered trademarks of Nokia
// Corporation.
// Java and all Java-based marks are trademarks or registered trademarks of
// Sun Microsystems, Inc.
// Other product and company names mentioned herein may be trademarks or
// trade names of their respective owners.
//
// A non-exclusive, non-transferable, worldwide, limited license is hereby
// granted to the Licensee to download, print, reproduce and modify the
// source code. The licensee has the right to market, sell, distribute and
// make available the source code in original or modified form only when
// incorporated into the programs developed by the Licensee. No other
// license, express or implied, by estoppel or otherwise, to any other
// intellectual property rights is granted herein.
package bcexchanger.ui;

import java.io.IOException;

import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.TextBox;
import javax.microedition.lcdui.TextField;
import bcexchanger.*;
import bcexchanger.comm.ExchangerCommImpl;
import bcexchanger.comm.ServiceDiscoveryState;
import javax.microedition.lcdui.Form;
import javax.microedition.lcdui.Image;
import javax.microedition.lcdui.ImageItem;
import javax.microedition.lcdui.Item;

/**
 * 
 * This class implements the main screen of the application. Using
 * this screen user can initiate an exchange of business cards, change
 * own business card and exit the application
 * 
 * The class is extending an example.BCExchanger.ui.Screen class
 * 
 * @version 1.0 29.09.2005
 * @see example.BCExchanger.ui.Screen Design patterns: State
 */
public class MainScreen extends Screen {

    private Command selectFile;
    private Command exitCommand;
    private Command buscarNodosBT;
    private Command listarMisArchivos;
    private Form textBox;
    private ImageItem imageItem;
    private Image image;
    private int typeOfOperation = ServiceDiscoveryState.PUT;

    /**
     * Constructor
     * 
     * @param _midlet -
     *          the parent class which keeps the current UI state
     */
    public MainScreen(BCExchangerMIDlet _midlet) {
        super(_midlet);
        midlet.initComm(); // init happens only the first time MainScreen
        // is created

        textBox = new Form("TuxtaMovil", new Item[]{getImageItem()});

        selectFile = new Command("Agregar Archivo", Command.ITEM, 1);
        exitCommand = new Command("Salir", Command.EXIT, 1);
        buscarNodosBT = new Command("Buscar Nodos", Command.ITEM, 1);
        listarMisArchivos = new Command("Listar mis Archivos", Command.ITEM, 1);


        textBox.addCommand(selectFile);
        textBox.addCommand(exitCommand);
        textBox.addCommand(buscarNodosBT);
        textBox.addCommand(listarMisArchivos);
        textBox.setCommandListener(this);

        displayable = textBox;
    }

    private ImageItem getImageItem() {
        if (imageItem == null) {
            // write pre-init user code here
            imageItem = new ImageItem("", getImage(), ImageItem.LAYOUT_DEFAULT, "<Missing Image>", Item.PLAIN);
            imageItem.setPreferredSize(60, 80);
            // write post-init user code here
        }
        return imageItem;
    }

    public Image getImage() {
        if (image == null) {
            // write pre-init user code here
            try {
                image = Image.createImage("/tux-treo.jpg");
            } catch (java.io.IOException e) {
                e.printStackTrace();
            }
            // write post-init user code here
        }
        return image;
    }

    public void commandAction(Command command, Displayable _displayable) {

        midlet.changeScreen(new AlertMessage(midlet,
                command.getLabel(), this));
        if (command == buscarNodosBT) {
            try {
                setTypeOfOperation(ServiceDiscoveryState.PUT);
                ((ExchangerCommImpl) midlet.getExchanger()).startSending(ServiceDiscoveryState.PUT);
                String text = "Searching for devices...";
                midlet.changeScreen(new ProgressScreen(midlet, text));
            } catch (IOException e0) {
                midlet.changeScreen(new AlertMessage(midlet,
                        "Cannot start inquiry " + e0, null));
            } catch (Exception e1) {
            }
        } else if (command == selectFile) {
            try {
                midlet.changeScreen(new FilesScreen(midlet));
            } catch (Exception e) {
                throw new RuntimeException("Internal error #18");
            }
        } else if (command == listarMisArchivos) {
            midlet.changeScreen(new ListFilesScreen(midlet));
        } else if (command == exitCommand) {
            midlet.quit();
        } else {
            // unknown command

            midlet.changeScreen(new AlertMessage(midlet,
                    command.getLabel(), null));

        }
    }

    public int getTypeOfOperation() {
        return typeOfOperation;
    }

    public void setTypeOfOperation(int typeOfOperation) {
        this.typeOfOperation = typeOfOperation;
    }
}
